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15

E-flite Ultimate 20-300 Assembly Manual

Note

: The servo horn should be installed parallel to the 

hinge line to produce the correct linkage geometry.

Important

: The suggested digital servos will require 

programming before setting the control throws. This will 

be covered in the manual before the throws are set.



  18. Use a 2mm x 4mm machine screw and #1 Phillips 

screwdriver to secure the linkage to the connector.

Hint

: The aileron should be centered and the servo  

horn aligned with the aileron hinge line before  

tightening the screw.

 

19. Repeat Steps 10 through 18 for the remaining  

servo linkage.

Stabilizer Installation

Required Parts

Bottom wing 

Fuselage

#4 washer, silver (2) 

Stabilizer

Socket head screw, 4-40 x 1-inch (2)

Elevator joiner wire

Required Tools and Adhesives

Ball driver: 3/32-inch 

Felt-tipped pen

Hobby knife 

Thin CA

Sandpaper

 

1. Attach the bottom wing to the fuselage using a two 

4-40 x 1-inch socket head screws and two #4 washers. 

Use the larger silver washers when attaching the bottom 

wing. Use a 3/32-inch ball briver to tighten the socket 

head screws.

Summary of Contents for Ultimate 20-300 10 ARF

Page 1: ...ecifications Wingspan 38 in 960mm Length 41 in 1045mm Wing Area 473 5 sq in 30 5 sq dm Weight w o Battery 34 36 oz 965 1020 g Weight w Battery 39 41 oz 1105 1160 g Ultimate 20 300 10 ARF Assembly Manu...

Page 2: ...n In addition check boxes have been placed next to each step to keep track of each step completed Steps with a single circle are performed once while steps with two circles indicate that the step will...

Page 3: ...ommend the crystal free interference free Spektrum DX6i 2 4GHz DSM 6 channel system If using your own transmitter we recommend the Spektrum 7 5 gram Super Sub Micro Digital Programmable Servos When us...

Page 4: ...FLC505 Intelligent 1 to 5 Cell Balancing Charger Notes Regarding Servos and ESC WARNING Use of servos other than those we suggest may overload the BEC of the recommended Electronic Speed Control ESC P...

Page 5: ...modification of or to any part of the Product This warranty does not cover damage due to improper installation operation maintenance or attempted repair by anyone other than Horizon Return of any good...

Page 6: ...e your original sales receipt verifying the proof of purchase date Provided warranty conditions have been met your Product will be repaired or replaced free of charge Repair or replacement decisions a...

Page 7: ...oid operating your model in the street where injury or damage can occur Never operate the model out into the street or populated areas for any reason Never operate your model with low transmitter batt...

Page 8: ...e hinges inserted in the slots of the wing Check that the end of the aileron is aligned with the wing tip using a straight edge mmm 5 Make sure the aileron does not bind at the center of the wing mmm...

Page 9: ...he hinges applying the CA to the slot in the hinge so it penetrates fully into the hinge for the best bond between the aileron and wing m 8 Repeat Steps 2 through 7 for the remaining aileron on the bo...

Page 10: ...it 1 16 inch 1 5mm Phillips screwdriver 0 1 Felt tipped pen mmm 1 Slide the control horn into the pre drilled holes in the aileron Use a felt tipped pen to mark the area around the base of the control...

Page 11: ...he CA fully cures Align horn to aileron centerline m 3 Repeat Step 2 for the top aileron at this time m 4 Secure a 6 inch 152mm servo extension to the aileron servo so it will not unplug inside the wi...

Page 12: ...on m 7 Position the servo in the opening Use a pin drill and 1 16 inch 1 5mm drill bit to drill the holes for the servo mounting screws Use care not to slip and puncture the covering on the top of the...

Page 13: ...drill and 1 16 inch 1 5mm drill bit to enlarge the hole that is 1 2 inch 13mm from the center of the servo horn m 11 Use a hobby knife to remove the webbing from the underside of the servo horn so th...

Page 14: ...ctor backplate to secure the connector m 15 Slide a clevis retainer onto the clevis of the 2 5 inch 62mm servo linkage m 16 Attach the clevis to the outer hole of the control horn and slide the retain...

Page 15: ...ould be centered and the servo horn aligned with the aileron hinge line before tightening the screw 19 Repeat Steps 10 through 18 for the remaining servo linkage Stabilizer Installation Required Parts...

Page 16: ...ing tip to each stabilizer tip The distances on the right must match those on the left Reposition the stabilizer to achieve equal measurements A A A A 4 Stand back and view the aircraft from the rear...

Page 17: ...ghtly INSIDE the lines drawn on the stabilizer Use light pressure so you do not cut into the underlying wood Remove the covering from the inside of the cut lines on the top and bottom of the stabilize...

Page 18: ...he top of the stabilizer first Then slide the stabilizer in and wick thin CA on the top left and right joint first using the bottom lines for the alignment Now use the alcohol and paper towel to remov...

Page 19: ...until instructed to do so m 1 Use a felt tipped pen to mark the center of three CA hinges This will help in positioning them equally in the elevator and stabilizer m 2 Slide the three hinges into the...

Page 20: ...inside the hole in the elevator that the joiner wire fits into Follow the previous steps to position the stabilizer before the epoxy cures Be very careful to make sure that no epoxy runs back out of t...

Page 21: ...e rudder to the fin using the hinges Remember to use a hobby knife to set the gap between the rudder and fin Apply thin CA to each side of the hinges Make sure to saturate the hinges applying the CA t...

Page 22: ...ed pen to mark the area around the base of the control horn Remove the horn and use a hobby knife to cut the covering away from the area inside the outline Use medium CA to attach the control horn to...

Page 23: ...drill the holes for the servo mounting screws Apply 2 3 drops of thin CA into each hole to harden the surrounding wood This will keep the screws secure in the holes Install the servo using the screws...

Page 24: ...ear right and left Receiver 4 washer silver 4 Hook and loop material 6 inch 152mm servo extension 2 Socket head screw 4 40 x 1 2 inch 4 Required Tools and Adhesives Ball driver 3 32 inch Threadlock 1...

Page 25: ...r and mount 4 washer 4 Hook and loop tape Hook and loop strap Cowling Spinner Spinner backplate Speed control Motor battery 3 inch 76mm servo extension EC3 extension lead w 6 inch wire 16 GA Machine s...

Page 26: ...inside the fuselage A 3 inch 76mm servo extension will be required to connect the speed control to the receiver A 6 inch EC3 extension will also be required to extend the battery lead to the front of...

Page 27: ...ight 7 Check the operation of the motor at this time It should rotate counterclockwise when viewed from the front of the aircraft If not follow the instructions provided with your speed control to cor...

Page 28: ...propeller or the spinner make sure to check the balance of each afterwards 9 Prepare the spinner backplate and propeller as shown with the propeller adapter 10 Slide the propeller assembly onto the mo...

Page 29: ...x 10mm machine screws 2 Required Tools and Adhesives Phillips screwdriver 1 Pin drill Drill bit 1 16 inch 1 5mm Low tack tape Adjustable wrench small Canopy glue 1 Use canopy glue to attach the canopy...

Page 30: ...overing to access the screw holes for the interplane struts 4 Use the following image to orient the interplane struts for installation 5 Use four 2mm x 20mm machine screws and a 1 Phillips screwdriver...

Page 31: ...Phillips screwdriver to secure the screws 7 Use four 2mm x 20mm machine screws and a 1 Phillips screwdriver to secure the interplane struts to the top wing as you did on the bottom wing m 8 After slid...

Page 32: ...hrow of the elevator ailerons and rudder Adjust the position of the pushrod at the control horn to achieve the following measurements when moving the sticks to their endpoints One of the most importan...

Page 33: ...ps that follow to achieve the correct and optimum servo and linkage setup for Ultimate 20 300 Note The correct servo arm lengths and control surface travels are listed below these steps 1 Set the nylo...

Page 34: ...own 3 4 inch 19mm Down 1 2 inch 20mm 35 Expo 20 Expo Elevator High Rate Low Rate Up 2 1 4 inch 57mm Up 1 3 4 inch 44mm Down 2 1 4 inch 57mm Down 1 3 4 inch 44mm 35 Expo 20 Expo Rudder High Rate Low Ra...

Page 35: ...ded with the radio In most cases the radio should be charged the night before going out flying Before each flying session be sure to range check your radio See your radio manual for the recommended ra...

Page 36: ...ur radio FlyingYour Ultimate 20 300 Flying the Ultimate 20 300 is a pleasure Takeoffs are easy as well as landings We hope you enjoy flying your Ultimate 20 300 as much as we do Happy Landings Instruc...

Page 37: ...established in front of which all flying takes place with the other side for spectators Only personnel involved with flying the aircraft are allowed at or in front of the flight line Intentional flyi...

Page 38: ...38 E flite Ultimate 20 300 Assembly Manual Building and Flying Notes...

Page 39: ...39 E flite Ultimate 20 300 Assembly Manual Building and Flying Notes...

Page 40: ...13465 2008 Horizon Hobby Inc 4105 Fieldstone Road Champaign Illinois 61822 877 504 0233 horizonhobby com E fliteRC com...

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